the article that i've read this week......................................
source:http://en.wikipedia.org/wiki/Car_engine
The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidiser (usually air) in a combustion chamber. In an internal combustion engine the expansion of the high temperature and pressure gases, that are produced by the combustion, directly apply force to a movable component of the engine, such as the pistons or turbine blades and by moving it over a distance, generate useful mechanical energy
The term internal combustion engine usually refers to an engine in which combustion is intermittent, such as the more familiar four-stroke and two-stroke piston engines, along with variants, such as the Wankel rotary engine. A second class of internal combustion engines use continuous combustion: gas turbines, jet engines and most rocket engines, each of which are internal combustion engines on the same principle as previously described.
The internal combustion engine (or ICE) is quite different from external combustion engines, such as steam or Stirling engines, in which the energy is delivered to a working fluid not consisting of, mixed with or contaminated by combustion products. Working fluids can be air, hot water, pressurised water or even liquid sodium, heated in some kind of boiler by fossil fuel, wood-burning, nuclear, solar etc.
A large number of different designs for ICEs have been developed and built, with a variety of different strengths and weaknesses. While there have been and still are many stationary applications, the real strength of internal combustion engines is in mobile applications and they completely dominate as a power supply for cars, aircraft, and boats, from the smallest to the biggest. Only for hand-held power tools do they share part of the market with battery powered devices. Powered by an energy-dense fuel (nearly always liquid, derived from fossil fuels) the ICE delivers an excellent power-to-weight ratio with few safety or other disadvantages.
Sunday, July 19, 2009
Sunday, July 12, 2009
MY EXPERIENCE.....

for the first time i arrived at the ump i was shocked.....
wow.....what a big place...
there are so many questions in my mind.....
how can i survive in this huge place????
do i need to walk to my class???
im not an independent girl....
do i need to wash my own clothes???
do i have to wake up in the morning on my own......
mom dad please help me!!!!!!!!!!
how can i live without you guys???
how can i live without my siblings???
who are going to help me here????
there's no one i know here.......
i don't want to live here...
what are going to happen to me then???
~to be continue~
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